Device for graphically indicating information on plans, maps, charts, or the like



May 17 1927. 1528,67?

H. A. MORICHAR'D J. DEVICE FOR GRAPHICALLY'INDICATING INFORMATION ONPLANS, MAPS, CHARTS, OR THEv LIKE Filed Nov. 4. 1924 2 Sheets-Sheet l 91,628,677 May 171 27 J. H. A MoRlcHARD DEVICE FOR GRAPHICALLY INDICATINGINFORMATION oN PLANS, MAPS, CHARTS, 0R THELIKE Filed Nov. 4. 1924 2Sheets-Sheet 2 Patented May 17, 1927.

1,628,677 PATENT OFFICE.

JEAN HENRI; ADREN MORICHABD, OF AMSTERDAM, ETHERLANDS.

DEVICE FOR GRArIaIcaLLY- INDICATING INFORMATION i R 'r1-IE LIKE.

Application filed Npvember 4, 13%, Serial No.

"The invention relates to improvements in` a device for graphicallyindicating information on plans, maps, charts or the like, which 1s ofuniversal application, for the purpose of indicating fluctuations ofvalues or other relations.

With this and other objects in view, the invention consists of certainnovel features, combinations and arrangements of parts as will behereinafter fully described, illustrated in the accompanying drawingsand more particularly pointed out in the claims hereto appended. i

In the drawings:

Fig. l is a front view of the device in the using position,

Fig. 2 isa section taken on the line II--II Fig. 1, wherein the box forenclosing the device only partly indicated,

Fig. 3-8`show several details.

Referring to the drawings: l is a plate preferably made of metal e. g.aluminium, adapted to be covered by a plan with horizontal dividinglines (not drawn), the plate being provided at the upper and lower edgewith slots 2, in which slots grooved discs 3 i fill are rotatablysupported upon shafts 4, 4. These shafts are supported in the plate andthe discs 3 at the lower edge are provided with milled edges. Thegrooved discs 3 at the top and bottom of the plate are arranged two andtwo in the same plane and over each pair of discs a cord 5 is strained,the ends of which are connected at the backside of the plate by a screwspring 6 (Fig. 2).

These cords consist of two parts 5il and 5h of different diameter orcolor. The connecting `point 7 of the two colors at the front side ofthe plate serve as an indicator and indicates the desired value or therelation between the indicated values. The line connecting theconnecting points 7 gives a clear graphical indication or information.

Parallel to the lower edge of the plate l. a shaft 8 (Figs. `1, 7 and 8)is arranged, supported in bearings 9, 9 of the plate 1 and along whichshaft a slide 1() is movable. The slide is provided with a handle 11, bywhich a pawl 12 can be brought in and out of engagement with a toothedrack 13 arranged behind and parallel to the shaft 8. By pressing thehandle 11 towards the piece 14 the pawl 12 turns back and then the slideis allowed to be moved along the shaft 8. The slide is further providedwith a spring 0N PLANS, MAPS, CHARTS,

747,872, and n the Netherlands Mayi, 1923.

controlled arm 15 carrying a milled disc 16 supported by a pin 17 thelatter being fixed in the arm 15. This arm 15 is hingedly connected tothe slide 10 at 18.

By pressing the milled disc 11.6 inwardly the same engages with theopposite positioned groovcd discs 3 and by rotating the disc 1G` thisdisc 3 also rotated and the connecting point 7 of the corresponding cordis displaced along the plate l.

Along the plate a ruler 20 is movable (Figs. 1 and 5) by a handle 39.;one end of which is provided with a bent spring Q1, adapted to gripround the edge of the plate, while the other end of thc ruler beingprovided with a. hinged U-shaped lever i212, which presses with a springagainst the other edge of the plate and in this manner draws the rulertoward the plate. This ruler is provided in order to enable thedifferent indicated values to bc compared with each other or with thenames of the relating articles which may be placed the one below theother on one side of the plan.

In order to allow all the cords to be brought back in the startingposition, a ruler Q4: (Figs. 2, and f1) is provided, having at the sidetoward the plate a number of grooves equal to the number of cords. Thewidth of these grooves is so chosen that a ball 26 (Fig. 2) on the cordcan not pass these grooves and by moving the ruler 24 all cords arebrought back to their starting point. This guide piece 24 is guided by acover plate 27 at the back of the plate '1, having a slot (not shown) inthe middle in which slot the handle 28 of the ruler 24 slides.

In order to prevent the cords from being displaced accidentally, anadjustable clamp 29 is provided at the upper edge of the plate 1 (Figs.1 and 2). Through this ruler three bolts 3() pass, said bolts beingprovided with nuts 31. By screwing down the nuts 31 this ruler :ispressed down upon the cords and locks the same in their adjustedposition.

The whole device as above described is surroundeil by a wooden box 33and is hingedly fixed in this box by pins 84, 34. Around these pins theplate 1 can be turned and placed in the position as shown in Fig. 2, thelower edge of the plate being provided with axles 35, 35,- engaging inspring-lock bearings 36 of the box.

When not in use the plate is lowered Hat in the box and the same isclosed at the sides by the sidewalls 37, which fit closely to the bottom38.

TheV operation of the device is substantially as follows: A map, chart,plan, or sheet of coordinate paper is inserted between the cords 5, andthe plate l, in such a manner that one of the axes of the inserted sheetis parallel to the cords, and the other axis is perpendicular thereto.Then, selecting a particular one of the cords 5, the arm or pointer 15is moved on the shaft 8 until it coincides with one of the discs 3,whereupon the milled disc 16 is revolved until the point of divisionbetween the colored and lincolored parts of the cord is opposite thedesired coordinate at the side of the map. The necessary number of theremaining cords may be adjusted in a similar manner, until the desireddata has been plotted on the cords 5, the ends 7 of lthe coloredportions of the cords, when connected, forming a curve which is afunction of the ordinates and the abscissae at the sides of the mapaccording to a well known theorem of mathematics. It is evident thatthis procedure can be reversed. as hereinbefore described to ploton thechart points whichsatisfy a given equation without departing from thespirit Lof the invention.

I claim:

l. In a device for graphically indicating information on plans, maps, orcharts containingr a supporting plate with grooved discs at the upperand lower edges, cords guided by said discs, the saine being strained bycoiled springs at the back side of the plate, an adjusting ball beingattached to each cord to cooperate with a toothed guidepiece slidablymounted at the back sido ot the supporting plate the space between theteeth being so chosen that the said ball cannot pass.

2. A devicofor graphically indicating information on plans, maps, orcharts containing a supporting plate according' to claim l,characterized by an adjustable clamp attached along the upper edge ofthe plate, provided with setscrews in order to lock thc cords in theiradjusted position.

3. A device for graphically indicating in formation according to claiml, characterized by a slide provided with ay pawl mechanism cooperatingwith a toothed rack parallel to the shaft alongr which the slide maymove, and means to unlock the slide.

In testimony whereof I have signed my name to this specification.

JEAN HENRI ADRIEN MORICHARD.

